/**
 * Created by PanJiaChen on 16/11/18.
 */

/**
 * @param {string} path
 * @returns {Boolean}
 */
export function isExternal( path ) {
    return /^(https?:|mailto:|tel:)/.test( path )
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validUsername( str ) {
    const valid_map = [ 'admin', 'editor' ]
    return valid_map.indexOf( str.trim() ) >= 0
}

/**
 * @param {string} url
 * @returns {Boolean}
 */
export function validURL( url ) {
    const reg = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/
    return reg.test( url )
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validLowerCase( str ) {
    const reg = /^[a-z]+$/
    return reg.test( str )
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validUpperCase( str ) {
    const reg = /^[A-Z]+$/
    return reg.test( str )
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function validAlphabets( str ) {
    const reg = /^[A-Za-z]+$/
    return reg.test( str )
}

/**
 * @param {string} email
 * @returns {Boolean}
 */
export function validEmail( email ) {
    const reg = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
    return reg.test( email )
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export function isString( str ) {
    if ( typeof str === 'string' || str instanceof String ) {
        return true
    }
    return false
}

/**
 * @param {Array} arg
 * @returns {Boolean}
 */
export function isArray( arg ) {
    if ( typeof Array.isArray === 'undefined' ) {
        return Object.prototype.toString.call( arg ) === '[object Array]'
    }
    return Array.isArray( arg )
}
